Vehicle Posture Control Using Motion Sickness Sensitivity

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Solution Overview

Problem

Existing vehicle control systems estimate motion sickness in occupants after it has progressed, failing to prevent it effectively.

Innovation Solution

A vehicle integrated control device that includes a target value generation unit, motion sickness sensitivity acquisition unit, and target value correction unit to anticipate and adjust vehicle movements based on individual occupant sensitivity to prevent motion sickness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If motion sickness is estimated based on past traveling state, then current progress of motion sickness can be determined, but motion sickness cannot be prevented in advance

Engineering Contradiction:

Improvemotion sickness estimation accuracyVSAvoidresponse time for motion sickness prevention

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The system performs preliminary action by estimating the occupant's motion sickness sensitivity in advance using biometric information (heart rate, skin conductance, temperature) before actual motion sickness occurs. The control target value is then corrected based on this pre-acquired sensitivity index, enabling preventive control rather than reactive control after symptoms appear.

Inventive Principle:

Principle #10Preliminary action

2Ease of operation

If vehicle control is adjusted based on motion sickness sensitivity, then riding comfort is improved, but control system complexity increases

Engineering Contradiction:

Improveriding comfortVSAvoidcontrol system complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The vehicle integrated control device performs multiple functions using a single system: it generates control target values for vehicle movement, acquires biometric information to determine motion sickness sensitivity, calculates the sensitivity index, and corrects control target values based on this index. This multi-functional approach improves riding comfort without requiring separate dedicated systems for each function.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The motion sickness sensitivity index acts as an intermediary parameter that bridges biometric information and vehicle control adjustments. Instead of directly controlling vehicle parameters based on complex biometric data, the system uses the sensitivity index as an intermediate representation, simplifying the control logic while maintaining effectiveness.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20250108788A1Vehicle integrated control device and vehicle integrated control method

Publication Date: 2025.04.03 ASTEMO LTD

AI summary

Provided is a vehicle integrated control device capable of controlling a posture of a vehicle so as to prevent in advance an occupant who has high sensitivity to motion sickness from suffering from the motion sickness. The vehicle integrated control device includes a target value generation unit that generates or acquires a control target value of a movement of a vehicle; a motion sickness sensitivity acquisition unit that acquires a motion sickness sensitivity index that is a quantitative value that is likeliness of incidence of motion sickness that differs depending on an occupant characteristic with respect to at least one occupant riding on the vehicle; and a target value correction unit that corrects the control target value based on the control target value and the motion sickness sensitivity index.